TWI396476B - Light module, composited circuit board device used therein, and assembling method thereof - Google Patents

Description

Light-emitting module, composite circuit board device therefor and assembly method thereof

The present invention relates to a lighting module and an assembling method thereof; in particular, the present invention relates to a lighting module with increased reliability and an assembling method thereof.

Conventional cathode ray tube display devices have been gradually replaced by flat display devices having advantages such as small size and low power consumption in the current trend of pursuing short and thin electronic devices. Therefore, flat display devices have become mainstream products in the current display device market.

There are many types of flat display devices, and liquid crystal display devices using liquid crystal display technology are currently popular products, and their market applications are also very wide, such as computer display devices, LCD TVs, etc. are also becoming increasingly popular. Since the liquid crystal display device is a non-self-illuminating type display device, a backlight unit is required to provide the required light to achieve the display function. In recent years, with the improvement of environmental awareness and other technical considerations, the light-emitting elements used in backlights have gradually been converted into light emitting diodes (LEDs). The light emitting diode is usually disposed on a printed circuit board to form a LED light bar in the backlight, and the LED light bar usually transmits the printed circuit board and the external circuit with flexible characteristics. Electrically connected to control the lighting mechanism of the backlight.

FIG. 1A is a schematic diagram of a backlight module of a liquid crystal display device. The backlight module includes a light-emitting module 60 composed of a light-emitting diode light strip and a flexible printed circuit board, and a light cover for accommodating the light-emitting diode light strip. 70. Optical film 80 and bottom frame 40. The conventional light-emitting module shown in FIG. 1B includes a first circuit board 10, a second circuit board 20, and a light source 30. The light source 30 is disposed on the first circuit board 10 and electrically connected to the first circuit board 10. . The second circuit board 20 having the flexible characteristic is also electrically connected to the first circuit board 10. Therefore, the external circuit can transmit the control circuit signal to the light source 30 located on the first circuit board 10 via the second circuit board 20, thereby further The lighting timing and mechanism of the illumination source 30 are manipulated. In the conventional light-emitting module shown in FIG. 1B, after the first circuit board 10 and the second circuit board 20 are electrically connected, the second circuit board 20 having the flexible characteristics is bent over the first circuit board 10. After being wound around the first circuit board 10, one end of the second circuit board 20 is then wound back to the front of the first circuit board 10 via the lower side of the first circuit board 10. Therefore, the function of fixing the two circuit boards to each other can be achieved by the second circuit board 20 around the characteristics of the first circuit board 10. In the conventional light-emitting module shown in FIG. 1C, in addition to the first circuit board 10 being wound by the second circuit board 20 to achieve a fixing function, the tape 50 is also used to increase the fixing effect between the two circuit boards. Where the tape 50 has a fixing effect in the horizontal and vertical directions.

However, when the first circuit board 10 having the light source 30 is placed on the lamp cover 70 in a subsequent assembly, the assembly operation or the lamp cover 70 may damage the second circuit board 20 wound around the first circuit board 10, thereby affecting The second circuit board 20 is electrically connected to the external circuit or to the first circuit board 100. Therefore, the phenomenon that the light source 30 cannot be smoothly illuminated occurs, and the reliability of the light emitting module is lowered.

The object of the present invention is to provide a light-emitting module and an assembly method thereof, which can reduce the possibility that the light-emitting module cannot be smoothly illuminated.

Another object of the present invention is to provide a light-emitting module and an assembly method thereof, which have the effect of improving product yield.

The light emitting module of the present invention comprises a first circuit board, a second circuit board and a light source. The first circuit board includes a first opening portion, a second opening portion, a first connecting portion and a surface, wherein the light source is disposed on a surface of the first circuit board and electrically connected to the first connecting portion of the surface. The second circuit board has a first bent portion, a second bent portion and a second connecting portion, wherein the second connecting portion is electrically connected to the first connecting portion of the first circuit board, so that the external circuit can pass through the second circuit board The second connecting portion is electrically connected to the light source, thereby controlling the lighting timing and mechanism of the light source.

The second circuit board of the light emitting module of the present invention has a flexible property, so that the second circuit board can pass through the first opening portion of the first circuit board, and the second circuit board located on both sides of the first opening portion is folded back to form The first bent portion is on the second circuit board, wherein the first bent portion is received in the first opening portion of the first circuit board. Passing through the first opening portion through one end of the second circuit board to form a first bent portion, so that the second circuit board passing through the portion of the first opening can contact the first circuit board or the surface of the first circuit board Parallel to each other. In the light emitting module of the present invention, the second circuit board having the flexible property passes through the second opening portion to form the second bent portion, wherein the second bent portion is received in the second opening portion of the first circuit board, and The first bent portion is located between the second bent portion and the second connecting portion. The second circuit board passes through the second opening portion to form a second bending portion, so that the second circuit board that passes through the portion of the second opening portion can pass through the surface of the first circuit board. Therefore, the first circuit board and the second circuit board are fixed to each other by the second circuit board passing through the first opening portion and the second opening portion of the first circuit board to form the first bent portion.

The lighting module assembly method includes the steps of first providing a first circuit board having a first connection portion, a first opening portion and a second opening portion on a surface, and providing a second circuit board having a second connection portion. Then, the illuminating source is disposed on the surface of the first circuit board, and is electrically connected to the first connecting portion. And electrically connecting the second connecting portion of the second circuit board and the first connecting portion of the first circuit board, so that the external circuit can be electrically connected to the light source of the first circuit board by the second connecting portion of the second circuit board Connect and manipulate the lighting mechanism of the light source. Thereafter, one end of the second circuit board connected to the first circuit board is passed through the first opening portion of the first circuit board, and the second circuit board is bent to form a first bending portion, wherein the first bending portion is received And forming a first opening portion and paralleling or contacting one end of the second circuit board passing through the first opening portion with the first circuit board. Finally, one end of the second circuit board connected to the first circuit board is passed through the second opening portion of the first circuit board so that one end of the second circuit board passing through the second opening portion can pass through the first circuit board The surface.

Since the step of the second circuit board traversing the first opening portion and the second opening portion of the first circuit board, the first circuit board can be fixed to the second circuit board without using the adhesive tape, and the second circuit board Not winding the outside of the first circuit board can reduce the damage of the second circuit board caused by the assembly step of the subsequent light-emitting module being accommodated in the lamp cover, and increasing the success degree of the external circuit controlling the illumination source lighting step via the second circuit board, In order to achieve the effect of increasing the reliability of the lighting module.

The invention provides a light emitting module and an assembling method thereof. The light emitting module of the present invention comprises a first circuit board, a second circuit board and a light source. The step of assembling the light module comprises forming a first bent portion by the second circuit board so as to pass through the first opening portion and the second opening portion of the first circuit board to complete the assembly operation of the light emitting module.

The light emitting module of the present invention comprises a first circuit board, a second circuit board and a light source. In an embodiment of the present invention, one end of the first circuit board 100 has a first opening portion 110, a second opening portion 130, a first connecting portion 150, and a surface 170. As shown in FIG. 2A, the first connecting portion 150 is disposed on the first connecting portion 150. The surface 170 of the first circuit board 100, the first opening portion 110 and the second opening portion 130 are respectively located at two sides of the first connecting portion 150. In this embodiment, the first circuit board 100 is preferably a rigid printed circuit board, and the first connecting portion 150 of the first circuit board 100 is made of a conductive material for use as an electrical connection. The material is copper and aluminum. In the embodiment shown in FIG. 2A, the first opening portion 110 and the second opening portion 130 are elongated closed openings extending in the longitudinal direction of the first circuit board 100, wherein the closed opening refers to the first circuit board. A complete elongated opening hole is formed in 100, and the edge of the elongated opening hole exhibits a closed curve state. As shown in FIG. 2A, the illumination source 300 is disposed on the surface 170 of the first circuit board 100, and is electrically connected to a line (not shown) of the first connection portion 150 through the first circuit board 100 to thereby control. The lighting mechanism of the light source 300. In the embodiment of the present invention, the light source 300 is a light emitting diode, which can be controlled by circuit driving to control its light emission, and has the advantages of energy saving and space saving. In the illustration of the present invention, only one light-emitting diode is exemplified, but those skilled in the art will understand that the light-emitting diodes may be plural.

In this embodiment, the second connecting portion 250 has a second connecting portion 250, as shown in FIG. 2C, for electrically connecting the first circuit board 100, so that the second connecting portion 250 has conductive characteristics. The material is common in copper and aluminum. In the embodiment shown in FIG. 2C, the first connecting portion 150 of the first circuit board 100 and the second connecting portion 250 of the second circuit board 200 are electrically connected to each other, so that the second circuit board 200 can transmit the control signal of the external circuit. To the first circuit board 100, the lighting mechanism of the light source 300 is controlled. In this embodiment, the first connecting portion 150 and the second connecting portion 250 can achieve the effect of electrical connection by using hot pressing, solder bonding or soldering technology.

Next, referring to FIG. 2B, the second circuit board 200 connected to the first circuit board 100 forms a first bend by causing one end of the second circuit board 200 to pass through the first opening portion 110 of the first circuit board 100. The folded portion 210 and the first bent portion 210 of the second circuit board 200 are received in the first opening portion 110 of the first circuit board 100. Therefore, the width of the second circuit board 200 is preferably slightly smaller than the width of the first opening portion 110. In this embodiment, the second circuit board 200 is a flexible printed circuit board having flexible characteristics, so that the second circuit board 200 can be bent by bending the two portions of the first opening portion 110 to form a first The bent portion 210 is on the second circuit board 200.

In the embodiment shown in FIG. 2C , the first opening portion 110 is located above the first connecting portion 150 of the first circuit board 100 , and the second opening portion 130 is located below the first connecting portion 150 of the first circuit board 100 . . When one end of the second circuit board 200 passes through the first opening portion 110 to form the first bent portion 210, the first bent portion 210 is accommodated in the first opening portion 110, and the second circuit board 200 is bent The folding operation contacts the back surface of the first circuit board 100 (relative to the other surface of the surface 170) or is parallel to the first circuit board 100. In the embodiment, the second circuit board 200 has a second bent portion 230 , wherein the first bent portion 210 is located between the second connecting portion 250 and the second bent portion 230 . As shown in FIG. 2C, the portion located after the second bent portion 230 of the second circuit board 200 passes through the second opening portion 130 to form the second bent portion 230, and the second bent portion of the second circuit board 200 is bent. A portion subsequent to the portion 230 passes through the surface 170 of the first circuit board 100.

In another embodiment shown in FIG. 2D, the first bent portion 210 is formed by enabling one end of the second circuit board 200 to pass through the second opening portion 130 of the first circuit board 100 and the first opening portion 110, respectively. The second bent portion 230. In this embodiment, after the second circuit board 200 passes through the second opening portion 130 located under the first connecting portion 150, the end located behind the first bent portion 210 of the second circuit board 200 is at the first connecting portion. Above the 150.

In another embodiment shown in FIG. 3A, the first opening portion 110 of the first circuit board 100 is a closed opening; the second opening portion 130 is an open opening, wherein the open opening refers to the first circuit board. An opening hole is formed in the opening hole, and the opening hole is a notch formed by the inward extension of the edge of the first circuit board 100, so that the edge of the opening hole is open, not in the state of the closed area line. In the present embodiment, the second opening portion 130 is an open opening extending inward from the bottom edge of the first circuit board 100. When the second opening portion 130 is an open opening, after the second circuit board 200 passes through the first opening portion 110, one end of the second circuit board 200 can be wound into the second opening portion 130 via the lower portion of the first circuit board 100. The open-type open space allows a portion of the second circuit board 200 to be accommodated in the open-ended opening space of the second opening portion 130 without intentional movement through the holes, thereby increasing assembly efficiency. In another embodiment shown in FIG. 3B, the first opening portion 110 of the first circuit board 100 is an open opening; the second opening portion 130 is a closed opening. In the present embodiment, the first opening portion 110 is an open opening extending inward from the top end of the first circuit board 100. When the first opening portion 110 is an open opening, the second circuit board 200 can be wound from the first circuit board 100 into the open opening space of the first opening portion 110 to form the first bending portion 210, and then the first opening portion 210 The two circuit boards 200 pass through the closed second opening portion 130, which can reduce the time taken for assembly and achieve the effect of fixing the second circuit board 200.

In another embodiment shown in FIG. 4A, the first opening portion 110 of the first circuit board 100 is a closed opening; the second opening portion 130 is an open opening. In the present embodiment, the second opening portion 130 is an open opening extending inward from the bottom edge of the first circuit board 100 and the adjacent side edges. When the second opening portion 130 is an open opening, one end of the second circuit board 200 can be wound into the space of the open opening via the side or the bottom side of the second opening portion 130, so that part of the second circuit board 200 can be The space accommodated in the second opening portion 130 reduces the assembly time that is intentionally made to pass through the closed opening. Meanwhile, since the second opening portion 130 is an opening extending inward from the bottom edge of the first circuit board 100 and the adjacent side edges, one end of the second circuit board 200 may be limited by the width of the second opening portion 130. The two circuit boards 200 can only accommodate openings within a certain width, increasing the schedulability and convenience of the subsequent connection position of the second circuit board 200 to the external circuit. In another embodiment, as shown in FIG. 4B, the first opening portion 110 of the first circuit board 100 is an open opening; the second opening portion 130 is a closed opening. In the present embodiment, the first opening portion 110 is an open opening extending inward from the top end of the first circuit board 100 and the adjacent side edges. When the first opening portion 110 is an open opening, one end of the second circuit board 200 can be wound into the space of the open opening via the side or the top edge of the first opening portion 110, so that the first bending portion 210 can accommodate In the space of the first opening portion 110, the assembly time is reduced to increase the efficiency.

FIG. 5 is a flow chart showing an embodiment of an assembly method of a light-emitting module device according to the present invention. Step 510 provides a first circuit board having a first connection portion, a first opening portion, and a second opening portion, wherein the first connection portion is located on a surface of the first circuit board. In this embodiment, the first circuit board 100 is a rigid printed circuit board, and the first connecting portion 150 of the first circuit board 100 is made of a conductive material for use as an electrical connection. A common material is Copper, aluminum, and the first connection portion 150 is disposed on the surface 170 of the first circuit board 100. In this step, the first opening portion 110 and the second opening portion 130 penetrating the first circuit board 100 are respectively formed on the first circuit board 100 by using the hole slot technology. Step 530 provides a second circuit board having a second connection. In this embodiment, the second circuit board 200 is a flexible printed circuit board, such as a flexible printed circuit board, and the second connecting portion 250 has a conductive property. The common material is copper or aluminum.

In the embodiment shown in FIG. 5, step 550 is to provide illumination from the surface of the first circuit board and electrically connected to the first connection portion. This step illustrates that the illumination source 300 is disposed on the surface 170 of the first circuit board 100 to electrically connect the illumination source 300 with the first connection portion 150. Therefore, the external circuit can control the lighting mechanism of the illumination source 300 by the first connection portion 150 of the first circuit board 100. Step 570 is electrically connected to the second connecting portion of the second circuit board and the first connecting portion of the first circuit board. This step may use the hot pressing, solder bonding or soldering technology to connect the first connecting portion 150 and the second connecting portion. 250 is connected to achieve the effect of electrical connection, so that the external circuit is electrically connected to control the lighting mechanism of the illumination source 300 located on the first circuit board 100.

In the embodiment shown in FIG. 5, step 580 is to pass one end of the second circuit board connected to the first circuit board through the first opening of the first circuit board, and bend the second circuit board to form the first bend. a folded portion, wherein the first bent portion is received in the first opening portion. In this step, one end of the second circuit board 200 connected to the first circuit board 100 is passed through the first opening portion 110 of the first circuit board 100, and a bending action is performed to form the first bending portion 210, so that the first The second circuit board 200 after the bent portion 210 contacts the back surface of the first circuit board 100, which is opposite to the surface 170 where the light source 300 is located.

Step 590: passing one end of the second circuit board passing through the first opening portion through the second opening portion of the first circuit board, and bending the second circuit board to form a second bending portion, wherein the first bending portion The portion is located between the second connecting portion and the second bent portion, and the second bent portion is received in the second opening portion of the first circuit board. This step illustrates passing one end of the second circuit board 200 having the flexible characteristics through the second opening portion 130 of the first circuit board 100 such that the subsequent second circuit board 200 is passed through the surface 170 where the illumination source 300 is located. Therefore, the second circuit board 200 is passed through the first opening portion 110 and the second opening portion 130 of the first circuit board 100 by the operation steps 580 and 590 to complete the mutually fixed assembly operation, thereby reducing the subsequent assembly process. The damage of the second circuit board 200, in turn, increases the reliability of illumination of the illumination source 300.

The present invention has been described by the above-described related embodiments, but the above embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, modifications and equivalents of the spirit and scope of the invention are included in the scope of the invention.

10. . . First board

20. . . Second circuit board

30. . . Light source

40. . . Bottom frame

50. . . tape

60. . . Light module

70. . . lampshade

80. . . Optical diaphragm

100. . . First board

110. . . First opening

130. . . Second opening

150. . . First connection

170. . . surface

200. . . Second circuit board

210. . . First bend

230. . . Second bend

250. . . Second connection

300. . . Light source

1A is a schematic view of a conventional backlight module;

1B is a schematic view of a conventional light emitting module;

1C is a schematic view of a light-emitting module assembly device of the prior art;

2A is a schematic view showing an embodiment of a first circuit board of a light emitting module of the present invention;

2B is a schematic view of an embodiment of a light emitting module of the present invention;

2C is a side view of an embodiment of a light emitting module of the present invention;

2D is a side view of another embodiment of the light emitting module of the present invention;

3A is a schematic view showing another embodiment of a first circuit board of a light emitting module of the present invention;

3B is a schematic view showing another embodiment of a first circuit board of the light emitting module of the present invention;

4A is a schematic view showing another embodiment of a first circuit board of a light emitting module of the present invention;

4B is a schematic diagram of another embodiment of a first circuit board of the light emitting module of the present invention; and

FIG. 5 is a flow chart of an embodiment of a method for assembling a light emitting module according to the present invention.

100. . . First board

110. . . First opening

130. . . Second opening

150. . . First connection

170. . . surface

200. . . Second circuit board

210. . . First bend

230. . . Second bend

250. . . Second connection

Claims (15)

A composite circuit board device includes: a first circuit board including a first opening portion, a second opening portion, and a first connecting portion, wherein the first opening portion and the second opening portion respectively penetrate the first opening portion a circuit board, the first connecting portion is disposed on a surface of the first circuit board; and a second circuit board having a first bent portion and a second connecting portion, wherein the second circuit board passes through the The first opening portion of the first circuit board and the second opening portion are received by the first opening portion, and the first connecting portion of the first circuit board is located at the first opening portion The second opening is electrically connected to the first connecting portion of the first circuit board. The composite circuit board device of claim 1, wherein the first opening portion and the second opening portion are closed openings. The composite circuit board device of claim 1, wherein the first opening is a closed opening; the second opening is an open opening. The composite circuit board device of claim 1, wherein the first opening is an open opening; the second opening is a closed opening. The composite circuit board device of claim 1, wherein the second circuit board further comprises a second bent portion received in the second opening portion, and the first bent portion is located in the second connection The portion is intermediate the second bent portion. A light-emitting module includes: a first circuit board, a first opening portion, a second opening portion, and a first connecting portion, wherein the first opening portion and the second opening portion respectively penetrate the first circuit a second circuit board having a first bent portion, wherein the second circuit board is worn The first opening portion and the second opening portion of the first circuit board, and the first bending portion is received in the first opening portion; and a light source is disposed on the first circuit board; wherein The first connecting portion of the first circuit is located between the first opening portion and the second opening portion, the first connecting portion and the light source are respectively disposed on a surface of the circuit board, and the light source and the first A connecting portion is electrically connected. The light-emitting module of claim 6, wherein the first opening portion and the second opening portion are closed openings. The illuminating module of claim 6, wherein the first opening is a closed opening; the second opening is an open opening. The illuminating module of claim 6, wherein the first opening is an open opening; the second opening is a closed opening. The illuminating module of claim 6, wherein the second circuit board further comprises a second connecting portion, wherein the second connecting portion is electrically connected to the first connecting portion of the first circuit board. The illuminating module of claim 10, wherein the second circuit board further comprises a second bent portion, and the first bent portion is located between the second connecting portion and the second bent portion. A method for assembling a light emitting module, comprising the steps of: providing a first circuit board having a first connecting portion, a first opening portion and a second opening portion, wherein the first connecting portion is located on the first circuit board a first surface of the first circuit board between the first opening portion and the second opening portion; a second circuit board having a second connecting portion; Providing a light source from the surface of the first circuit board and electrically connected to the first connecting portion; electrically connecting the second connecting portion of the second circuit board to the first connection of the first circuit board Passing one end of the second circuit board connected to the first circuit board through the first opening portion of the first circuit board, and bending the second circuit board to form a first bending portion, wherein the The first bent portion is received in the first opening portion; and the end of the second circuit board passing through the first opening portion is passed through the second opening portion of the first circuit board, and the a second circuit board to form a second bent portion, wherein the second bent portion is received in the second opening portion, and the first bent portion is located between the second connecting portion and the second bent portion . The method of assembling a light-emitting module according to claim 12, wherein the first opening portion and the second opening portion are closed openings. The method of assembling a light-emitting module according to claim 12, wherein the first opening is a closed opening, and the second opening is an open opening. The method of assembling a light-emitting module according to claim 12, wherein the first opening is an open opening, and the second opening is a closed opening.